Listening device belonging to Israeli revolutionary (3)
I believe the answer is:
ear
'listening device' is the definition.
(I've seen this in another clue)
'belonging to israeli revolutionary' is the wordplay.
'belonging to' indicates the answer is hidden within the clue (I've seen this in other clues).
'revolutionary' is a reversal indicator.
'rae' is hidden within 'israeli'.
'rae' in reverse letter order is 'EAR'.
(Other definitions for ear that I've seen before include "Aural appendage" , "Part of corn plant" , "That makes sense" , "Lend one and listen" , "'Give every man thine ..., but few thy voice' (Hamlet)" .)